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Patent number:
Patent Date:
US Patent: 490,777
Shearing Machine
Patentee:
Samuel Trethewey (
exact
or
similar
names) - Pittsburg, Allegheny County, PA
USPTO Classifications:
144/162.1
,
144/243
,
83/389
,
83/625
,
83/694
,
83/955
Tool Categories:
metalworking machines
:
metal shearing machines
Assignees:
Trethewey Mfg. Co.
- Pittsburg, Allegheny County, PA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Apr. 16, 1892
Granted:
Jan. 31, 1893
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Trethewey Mfg. Co.
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